Construction of wrenches.



Patented July 29, !902.

H. SEARLE- CONSTRUCTION OF WRENCHES.

(Applicgt'xon filed. Apr. 18, 1902.)

(No Medan-j .at line X X on Fig. 1.

' UNITED STATES PAT NT OFFICE.

HARRY SEARLE,OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO GOES WRENCH COMPANY, OF W'OROESTER, MASSACHUSETTS, A CORPORA- TION OF MASS AOHUSETTS.

CONSTRUCTION OF WRENCHES.

SPECIFICATION forming part of Letters Patent No. 705,875, dated July 29, 1902.

Application filed April 18, 1902. Serial No. 103,557. (No model.) 7

To ruZZ whom it may concern:

Be it known that I, HARRY SEAELE, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in the Construction of Wrenches, of which the following, together with the accompanying drawings, is a specification sufficiently full, clear, and exact to enable persons skilled in the art to which this invention appertains to make and use the same.

This invention relates to means for securingthejaw-adjusting screw inascrew-wrench against endwise displacement .in relation to the wrench-bar, the object being to provide a guard-pin or rigid stud permanently fixed in the front of the bar and projectingoutward therefrom for engagement with the rosette or thumb-boss of the screw, as hereinafter explained and as illustrated in the accompanying drawings, whereinv Figure 1 represents a side View of a Ooes wrench having my improvement embodied therein. Fig. 2 is a front view of a portion of the wrench b ar, showing the guard-pin fixed therein. Fig. 3 is a transverse section Fig. 4 is a vertical section at the lower end of the adjustingscrew. Fig. 5 is a section at line Y Yon Fig. 1, showing the bottom end of the sliding jaw. Fig. 6 is a transverse section similar to Fig. 3, but'showing the guard-pin as made I with a T-head; and Fig. 7 is a front view of aportion of the wrench-bar, showing the T- headed pin.

In the drawings, A denotes the wrench-bar, having the fixed jara on the upper end there'- of and the handlesupporting shank A at its lower end.

13 indicates the movable jaw, that slides on the wrench-bar in usual manner; 0, the jawadjusting screw, provided with the rosettehead 0 and end journal 0 and D the top end of the handle-frame or collar portion, which is fitted upon the bar-shank and against the positioning-shoulders d and carries the projecting bearing-step D within which the journal of the screw is supported at a position that will permit the rosette-head C to stand clear from the front plane of the wrenchbar, all in well-known arrangement.

As afeatnre of my present invention I provide on the front of the wrench-bar at a position adjacent to the rosette-head C a pro jecting pin or guard-stud I, which is permanently fixed or solidly incorporated in the body of the wrench-bar and has an end portion thereof that projects outward over the edge of the rosette C, or engages therewith in such manner that the screw 0, while it is free to rotate without interference, cannot be moved endwise sufficiently to release the j ournal c from the bearing-step D owing to contact and arrest by the rigid pin I. For supporting the pin I a hole is formed in the front of the wrench-bar at the position desired, and thepin is inserted therein after the slidable jaw B has been assembled on the wrenchbar, but before the screw is assembled therein. The pin I is driven into the hole and is then made fast and solidly incorporated with the bar by staking up the metal of the wrenchbar around the pin, as indicated at m, by means of a suitable staking-tool, thus fixing the pin permanently in position with its outer end projecting, as shown. The screw 0 is then screwed into the jaw B and the handle D assembled u pon the bar-shank and against the shoulder 61, said handle-frame being secured upon the bar-shank in well-known or suitable manner. The rosette then occupies a position between the end of the handle-frame and the pin 1, andis thereby confined against endwise movement, while its free rotative movement is permitted.

The'neck of the pin can be made of slightlysmaller diameter that the inner end, so that the stakingup of the metal of the bar will give a firm hold upon the pin.

The lower end of the slidable jaw B is preferably provided with a recess or cavity 1) of suitable depth, (see Fig. 5,) into which the projecting portion of the pin I can enter when the jaw B iscompletely opened ,"thus allowing the jaw body, which would otherwise strike the top of the pin I, to pass down to the rosette and the jaw to be opened to its fullest extent. 1

In some instances the guard pin may be made with a broad flat end or T-head, substantially as illustrated at I in Figs. 6 and 7, the projecting portion being of greater dimension than the inserted portion, said T- head affording a somewhat-greater wearingsurface against the rosette. Said pin can also, if desired, be integrated with the wrenchbar by brazing, sweating, or soldering it permanently in position.

What I claim herein as of my invention, and desire to secure by Letters Patent, is

1. In a wrench of the class described, the combinationwith the wrench-bar, the handleframe or collar portion carrying the bearingstep, the slidable jaw, and the jaw-adjusting screw journaled in said step, and having the rosette thereon standing clear of the front plane of the wrench-bar; of a guard pin or stud inserted and solidly fixed at one end in the metal of the front edge of said wrenchbar, with its projecting outer end in overlying engagement with the rosette, and confining said adj usting-screw against endwise displacement.

2. Ina wrench of the character described, in combination with the wrench bar; the

screw-supporting step and the jaw-adjustingscrew, of guard pin or stud inserted in an opening in the front of the Wrench-bar above the top edge of the rosette, and solidly incorporated therein by staking in the metal of the bar around the neck of the pin, the head of the pin projecting outward above the rosette, substantially as set forth.

3. In c0mbination, with the wrench-bar, the sliding jaw, thehandle-frame and the adjusting-screw having the rosette thereon; a guard-pin fixedly inserted in the front of said wrench-bar, and having the head or projectin g portion of greater width than the inserted portion, for the purpose set forth.

4. In a wrench. of the character described, in combination, with the wrench bar, the handle-collar, and jaw-adjusting screw having the rosette thereon; a protuberant pin or retaining member supported in the wrench.- bar and projecting over the edge of the rosette for endwise confinement of the screw, and the slidable jaw arranged on said wrench-bar and screw, said jaw being provided with a recess or cavity at its lower end into which said retaining member is received when said jaw is at fully-opened position.

Witness my hand this 15th day of April, 1902.

HARRY SEARLE. 

